var xx = 5

// let aaa
function set_xx() {
    xx = 3
}

set_xx()
console.log(xx)

// let a = globalThis.x
// console.log(a)
// console.log(abcd.xx)
console.log(global.xx) // => undefined
console.log(globalThis.xx) // => undefined


let a = 2
// let a = 3
{
    let x = 3;
    var y = 4
}
// console.log(x)
console.log(y)
